Put some utils in their own modules.

packages/xo-collection/src/clear-object.js

@@ -0,0 +1,5 @@
+export default function clearObject (object) {
+  for (let key in object) {
+    delete object[key]
+  }
+}

packages/xo-collection/src/index.js

@@ -1,29 +1,8 @@
 import bind from 'lodash.bind'
-import {BaseError} from 'make-error'
 
-// ===================================================================
+import clearObject from './clear-object'
-
+import isEmpty from './is-empty'
-class NotImplemented extends BaseError {
+import NotImplemented from './not-implemented'
-  constructor (message) {
-    super(message || 'this method is not implemented')
-  }
-}
-
-// ===================================================================
-
-const clearObject = (object) => {
-  for (let key in object) {
-    delete object[key]
-  }
-}
-
-const isEmpty = (object) => {
-  /* eslint no-unused-vars: 0 */
-  for (let key in object) {
-    return false
-  }
-  return true
-}
 
 // ===================================================================
 

packages/xo-collection/src/is-empty.js

@@ -0,0 +1,7 @@
+export default function isEmpty (object) {
+  /* eslint no-unused-vars: 0 */
+  for (let key in object) {
+    return false
+  }
+  return true
+}

packages/xo-collection/src/not-implemented.js

@@ -0,0 +1,7 @@
+import {BaseError} from 'make-error'
+
+export default class NotImplemented extends BaseError {
+  constructor (message) {
+    super(message || 'this method is not implemented')
+  }
+}